I had a cel read and it said that cylinders 1 and 3 were misfiring and to change my plug wire or spark plugs or coil pack. I changed the plug wire yesterday and on it run worst then it did before. It will backfire and sometimes die when ever I hit the gas. Any one know what it could be? I also have very bad fuel mileage, I have driven only 90 miles and I have used have a tank of gas.
